20671881

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 29678304

約数和(自身を除く): 9006423

約数列:

[1, 3, 17, 51, 113, 211, 289, 339, 633, 867, 1921, 3587, 5763, 10761, 23843, 32657, 60979, 71529, 97971, 182937, 405331, 1215993, 6890627, 20671881]

約数ペア:

[(1, 20671881), (3, 6890627), (17, 1215993), (51, 405331), (113, 182937), (211, 97971), (289, 71529), (339, 60979), (633, 32657), (867, 23843), (1921, 10761), (3587, 5763)]